Expressing of certainty and uncertainty

                The Expressing of Certainty and Uncertainty       
                          
1.Expressing of Certainty
*I am sure
*No doubt
 *I am positive
*It is comfirmed
*I am certain about that
*I am quite sure
*Certainty or definitely

2.Expressing of Uncertainty
*I am not sure
*I doubt about it

Example of Certainty and Uncertainty
Desra         :”Oh no.. Where is my handphone?”
Chairani     :”What do you think?”
Desra          :”I think my handphone is lost.”
Chairani     :”Are you sure about it?”
Desra          :”Yes I am sure. I used it for got information two hours ago.”
Chairani     :”Don’t worry, let’s me help you to find for your handphone.”
Desra         :”I doubt about it, because I have for looked it at all of my roos.”
Chairani     :”I am positive , I want to help you.”
Desra         :”Oh ok. Thank you.”